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			<h1>common_schema</h1> <strong>2.2</strong> documentation
			<div class="subtitle">DBA's framework for MySQL</div>
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				<h2><a href="json_to_xml.html">json_to_xml</a></h2>	
<h3>NAME</h3>
json_to_xml(): Convert valid JSON to equivalent XML
<h3>TYPE</h3>
Function

<h3>DESCRIPTION</h3>
<p>
	<i>json_to_xml()</i> accepts text in <a href="http://www.json.org/">JSON</a> format,
	and converts it to its XML equivalent.
</p>
<p>
	Both JSON and XML are commonly used to describe objects and properties; both allow
	for tree-like structure. Both are strict (to some level) in data definition.
</p>
<p>
	<i>json_to_xml()</i> assumes a valid JSON input, and returns its XML equivalent, such that:
	<ul>
		<li>
			Internal structural tests on JSON format apply. 
			In any case of failure the function returns <strong>NULL</strong>
		</li>
		<li>
			Produced XML is consisted of elements and text. No attributes generated.
		</li>
		<li>
			Names are mapped to nodes. Simple values are mapped to text. Object values to
			subnodes. Arrays to multiple nodes.
		</li>
		<li>
			XML text is automatically encoded (e.g. the <strong>"&gt;"</strong> character converted to <strong>"&amp;gt;"</strong>). 
			XML node names are not encoded.
		</li>
		<li>
			Result XML is not beautified (no spaces or indentation between elements)
		</li>
	</ul>
</p>

<p>
	NOTE: this function is CPU intensive. This solution should ideally be implemented through
	built-in functions, not stored routines.
</p>

<h3>SYNOPSIS</h3>
<p>
<blockquote><pre>json_to_xml(
    json_text TEXT CHARSET utf8
) RETURNS TEXT CHARSET utf8</pre></blockquote>
</p>
<p>
  Input:
  <ul>
    <li><strong>json_text</strong>: a valid JSON formatted text.
	</li>
  </ul>
</p>

<h3>EXAMPLES</h3>
<p>Convert JSON to XML:</p>
<blockquote><pre>mysql&gt; SET @json := '
{
  "menu": {
    "id": "file",
    "value": "File",
    "popup": {
      "menuitem": [
        {"value": "New", "onclick": "CreateNewDoc()"},
        {"value": "Open", "onclick": "OpenDoc()"},
        {"value": "Close", "onclick": "CloseDoc()"}
      ]
    }
  }
}
';

mysql&gt; SELECT json_to_xml(@json) AS xml \G
*************************** 1. row ***************************
xml: &lt;menu&gt;&lt;id&gt;file&lt;/id&gt;&lt;value&gt;File&lt;/value&gt;&lt;popup&gt;&lt;menuitem&gt;&lt;value&gt;New&lt;/value&gt;&lt;onclick&gt;CreateNewDoc()&lt;/onclick&gt;&lt;/menuitem&gt;&lt;menuitem&gt;&lt;value&gt;Open&lt;/value&gt;&lt;onclick&gt;OpenDoc()&lt;/onclick&gt;&lt;/menuitem&gt;&lt;menuitem&gt;&lt;value&gt;Close&lt;/value&gt;&lt;onclick&gt;CloseDoc()&lt;/onclick&gt;&lt;/menuitem&gt;&lt;/popup&gt;&lt;/menu&gt;
</pre></blockquote>

<p>Beautified form of the above result:</p>
<blockquote><pre>
&lt;menu&gt;
  &lt;id&gt;file&lt;/id&gt;
  &lt;value&gt;File&lt;/value&gt;
  &lt;popup&gt;
    &lt;menuitem&gt;
      &lt;value&gt;New&lt;/value&gt;
      &lt;onclick&gt;CreateNewDoc()&lt;/onclick&gt;
    &lt;/menuitem&gt;
    &lt;menuitem&gt;
      &lt;value&gt;Open&lt;/value&gt;
      &lt;onclick&gt;OpenDoc()&lt;/onclick&gt;
    &lt;/menuitem&gt;
    &lt;menuitem&gt;
      &lt;value&gt;Close&lt;/value&gt;
      &lt;onclick&gt;CloseDoc()&lt;/onclick&gt;
    &lt;/menuitem&gt;
  &lt;/popup&gt;
&lt;/menu&gt;
</pre></blockquote>

<h3>ENVIRONMENT</h3>
MySQL 5.1 or newer

<h3>SEE ALSO</h3>
<a href="encode_xml.html">encode_xml()</a>,
<a href="extract_json_value.html">extract_json_value()</a>

<h3>AUTHOR</h3>
Shlomi Noach
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